Jefferson County, Illinois
Jefferson County profile, demographic data, and geographic information.
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
COUNTY OF JEFFERSON
GUS Population: 36,107 (2024)
ID: 124843
|
County | Official County Government |
Contact: EXECUTIVE ASSISTANT
100 S 10TH ST, RM 106, MOUNT VERNON IL 62864
|
|
CITY OF MOUNT VERNON
GUS Population: 14,162 (2024)
ID: 162387
|
Municipal | Municipal Government Within County |
Contact: FIN. DIRECTOR
PO BOX 1708, MOUNT VERNON IL 62864-0034
|
|
GUS Population: 12,160 (2024)
ID: 162997
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
811 HARRISON ST, MOUNT VERNON IL 62864-3943
|
|
TOWNSHIP OF SHILOH
GUS Population: 6,433 (2024)
ID: 162999
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
9298 E BELLVIEW RD, MOUNT VERNON IL 62864-7381
|
|
TOWNSHIP OF DODDS
GUS Population: 2,677 (2024)
ID: 102987
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
14821 E BAKERVILLE RD, MOUNT VERNON IL 62864-7171
|
|
TOWNSHIP OF SPRING GARDEN
GUS Population: 2,557 (2024)
ID: 185078
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
16750 E ADAMS RD, BONNIE IL 62816-4402
|
|
TOWNSHIP OF WEBBER
GUS Population: 2,090 (2024)
ID: 189975
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
16443 N BLACKBIRD LN, BLUFORD IL 62814-3408
|
|
VILLAGE OF INA
GUS Population: 1,648 (2024)
ID: 162386
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 147, INA IL 62846-0147
|
|
TOWNSHIP OF ROME
GUS Population: 1,619 (2024)
ID: 162998
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
6205 E COPELAND RD, DIX IL 62830-2512
|
|
TOWNSHIP OF FIELD
GUS Population: 1,486 (2024)
ID: 162994
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
21083 N MILLER LAKE LN, TEXICO IL 62889-2818
|
|
TOWNSHIP OF MCCLELLAN
GUS Population: 1,189 (2024)
ID: 125210
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
7783 E STAGECOACH RD, WALTONVILLE IL 62894-2100
|
|
TOWNSHIP OF CASNER
GUS Population: 1,145 (2024)
ID: 162993
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
13169 N DUTCH LN, ASHLEY IL 62808
|
|
TOWNSHIP OF PENDLETON
GUS Population: 1,127 (2024)
ID: 125211
|
Township | Municipal Government Within County |
Contact: CLERK
19004 EAST 7TH STREET, OPDYKE IL 62872
|
|
TOWNSHIP OF GRAND PRAIRIE
GUS Population: 883 (2024)
ID: 162995
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1890 WASHINGTON ST, CARLYLE IL 62231-1748
|
|
TOWNSHIP OF BALD HILL
GUS Population: 781 (2024)
ID: 204316
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
4574 E FREEMAN RD, SCHELLER IL 62883-2429
|
|
TOWNSHIP OF ELK PRAIRIE
GUS Population: 671 (2024)
ID: 125209
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
5970 N NASON LN, BONNIE IL 62816-3300
|
|
VILLAGE OF WOODLAWN
GUS Population: 607 (2024)
ID: 162389
|
Municipal | Municipal Government Within County |
Contact: MAYOR
PO BOX 209, WOODLAWN IL 62898-0209
|
|
VILLAGE OF BLUFORD
GUS Population: 604 (2024)
ID: 124951
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 140, BLUFORD IL 62814-0140
|
|
TOWNSHIP OF FARRINGTON
GUS Population: 566 (2024)
ID: 137903
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
22118 E WELLS CHAPEL RD, BLUFORD IL 62814-2103
|
|
VILLAGE OF DIX
GUS Population: 456 (2024)
ID: 189928
|
Municipal | Municipal Government Within County |
Contact: TREASURER
217 N MAIN ST, DIX IL 62830-1530
|
|
VILLAGE OF WALTONVILLE
GUS Population: 402 (2024)
ID: 162388
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 5, WALTONVILLE IL 62894-0005
|
|
TOWNSHIP OF BLISSVILLE
GUS Population: 373 (2024)
ID: 162992
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
2861 E RADOM RD, ASHLEY IL 62808-3907
|
|
VILLAGE OF BONNIE
GUS Population: 364 (2024)
ID: 102709
|
Municipal | Municipal Government Within County |
Contact: SECRETARY/TREASURER
PO BOX 117, BONNIE IL 62816-0117
|
|
TOWNSHIP OF MOORES PRAIRIE
GUS Population: 350 (2024)
ID: 162996
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
165 N ENGLAND LN, EWING IL 62836-2100
|
|
VILLAGE OF BELLE RIVE
GUS Population: 300 (2024)
ID: 162385
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 147, BELLE RIVE IL 62810-0147
|
|
TOWN OF NASON
GUS Population: 196 (2024)
ID: 102708
|
Municipal | Municipal Government Within County |
Contact: CITY TREASURER
121 N 9TH ST, NASON IL 62816
|